Currently these are Email Monitor issues that need to be fixed but I've decided to put up a summary of how to fix those until they're addressed in further releases.
If SD.Email.Monitor project package hasn’t been unpacked yet, go ahead and do so from %ProgramFiles%\Symantec\Workflow\WorkflowProjects directory.
2. In Primary Model: On Email Body Exists output for POP emails there’s an Exception Component on ‘exists’ path.
Remove the Exception Component and connect ‘exists’ output to ‘Remove Html From Body’ component.
3. This particular issue doesn't appear in 8.0 HF1 release. In SD 8.0 GA, inside the Exception Handling model there are Send Email components with incorrect smtp server variable:
[[ProfileProperties].service_desk_settings_smtpmail_server]
Save all changes to the project and re-publish it to IIS.